Roll-holding camera.



No. 659,963. Patented Oct. I6, |900. A. 0.,GRAF.

BO'LL HOLDlNG CAMERA. (Appxiction med mr. 2o, l'oo.)

3 Sheets-Sheet I.

(No Illodel.)

/N VE N TOR WTNESSES.'

Tn: Nosms versus co,4 Mofo-umn., WASHINGTON. n. c.

Patented Oct. I6, |900. A. 0. GRAF.

ROLL HOLDING CAMERA.

(Application Bled Mar. 20, 1900.)

3 Sheets-Sheet 2.

(No Model.)

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/N VENOR W/ TNE SSE S we Noams rzrzns en, pummuwo. wuumomn. n c.

No. 659,963. Patented Oct. I6, |900. A. 0. GRAF.

ROLL HOLDING CAMERA.

(Application Bled Mar. 20, 1900.) (No Model.) 3 Sheets-Sheet 3.

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UNITED STATES PATENT OFFICE.

ADOLF OTTO GRAF, OF DEMAREST, NEW' JERSEY.

ROLL-HOLDING CAMERA.

SPECIFICATION forming part of Letters Patent N o. 659,963, dated October 16, 1900.

Application led March 20, 1900. Serial No. 9,371. tNo model.)

To all whom it may concern.-

Be it known that I, ADoLF OTTO GRAF, a

'citizen of the United States, residing at Demarest, in the county of Bergen and State of New Jersey, have invented certain new and useful Improvements in Photographic Cameras, of which the following is a specification.

This invention has reference to certain improvements in photographic cameras, and more especially to a camera which can be used in the ordinary manner with a ground glass and plate-holder and also as a camera in which a film-carrying roll-holder is arranged in such a manner that different sections of the iilm can be readily focused on the ground glass before exposure and moved entirely out of the way when the camera is to be used as an ordinary plate-camera.

The invention consists of a photographic camera provided with a space for the plateholder, a shiftable ground glass, a roll-holder, means for guiding said roll-holder in the said space for the plate-holder, means for releasing the roll-holder, so as to unwind the required length of film, mechanism for locking the roll-holder when moved across the camera for exposing the film portion, and a windingup roll adjacent to the normal position of the roll-holder for the successive winding up of the exposed films; and the invention consists, further, of certain details of construction and' combinations of parts, which will be fully described hereinafter and finally pointed out in the claims.

In the accompanying drawings, Figure l represents a perspective view of my improved photographic camera. Fig. 2 is a horizontal section, parts in elevation, `showing the rollholder in its normal position, so that the camera can be used in the ordinary manner with the ground glass and plate-holder. Fig. 3 is also a horizontal section showing the rollholder moved across the camera, so as to expose a portion of the film. Fig. et is a vertical transverse section of the camera on line 4 4, Fig. 3. Fig. 5 is a detail plan view, parts broken out, of the roll-holder with its locking and releasing mechanism; and Fig. (i is a longitudinal section of Fig. 5.

Similar letters of reference indicate corresponding parts.

Referring to the drawings, A represents the exterior box or casing of my improved photographic camera. The casing A is provided with a hinged front lid a, a hinged rear lid a', and hinged side lids a2. The hinged front lid a serves for guiding the lens-carry- `ing frame of the bellows-shaped portion B of the camera, so that the same can be extended forwardly and locked in proper position in the well-known way. The ground glass C is arranged at the rear portion of the casing A and inclosed by a suitable frame C', to which is pivoted the crank C2 of a center pivot C3, the upper end of which extends through the casing and is provided with a suitable handle O4, by which the ground glass can be moved and swung into forward position at the rear end of the bellows portion, so as to produce the focusing of the picture to be taken when an ordinary plate-holder is to be used. The forward position of the ground glass is shown in dotted lines in Fig. 2. The ground glass after focusing is moved in backward direction by its crank-handle C4 and the plateholder inserted through the right-hand opening and the exposure made in the usual way. Sufficient space is arranged for the plateholder at the rear end of the bellows-shaped portion B.

At the left-hand rear corner of the casing A is arranged a roll-holder D, while at the left-hand front corner is placed a windin g-u p roller DQ the shaft of the latter being extended through the top of the casing and provided with a handle DX, so as to permit the turning of the winding-up roller when desired. The film is wound up on the roll-holder in the usual manner and secured in a slit in the winding-up roller, the iilm being suitably guided from the roll-holder D to the windingup roller D', as shown clearly in Fig. 2.

The roll-holder D is provided at its lower end with a pawl-and-ratchet device F F', the pawl F being preferably made in the form of a U-shaped wire, the longer leg of which is extended through the keeper E below the rollholder, a helical spring E' being interposed between a pin E2 on the longer leg of the pawl and the opposite end of the keeper, as shown clearly in Fig. 5. The projecting end fof the pawl F is engaged by the bent-up inner end or abutment Gr of a slide-frame G, which is guided in suitable top and bottom grooves g IOO . and 5.

ofthe casin A,the upper portion of the frame engaging the upper end of the roll-holder. The opposite end of the slide-frame G is extended beyond the casing and provided with bent ends g', which extend over the top and bottom of the casing, said outwardly-bent ends g being pivotally connected with a bail or handle G, as shown clearly in Figs. l, 4L, On the supporting-frame D2 of the roll-holder D is supported a guide-roller d, while a second guide-roller d is supported in the casing between the roll-holder D and the winding-up roller D. The supporting-frame D2 of the roll-holder D is further provided at both ends with suitable flanges D3, that are guided in longitudinal grooves d2 in the top and bottom of the casing, so as to permit the roll-holder to move from its normal position at the left-hand corner of the casing toward the second position at the right-hand corner of the casing whenever the camera is to be used for making film exposures, in which case the handle G of the slide-frame G is taken hold of and pulled. The outward motion of the slide-frame G causes it to act on the projection f of the longer leg of the spring-pawl F and to release the pawl from the ratchet- Wheel F of the roll-holder D, so that during the continuance of this pressure the rollholder will be turned on its axis and cause the unwinding of the film, assisted by the guide-roller d and the winding-up roller D. When the roll-holder D arrives in its position at the right-hand corn er of the casing,as shown in Figs. 3 and ,the supporting-frame D2 of the roll-holder is engaged at the upper and lower ends by suitable spring-actuated catches 7i, which engage the ends of said supportingframe, so as to retain the frame firmly in position and hold the unrolled film in tightlystretched position at the inner end of the bellows-shaped portion B at the point where the ground glass was placed when the picture was focused. If the film is not sufficiently stretched, a slight turn is imparted to the rolle-r D by turning the handle DX. After the film-picture is taken the roll-holder is released from its retaining-catches 7i 7i by pressing with the thumb on the upper catch, this pressure, which is imparted through the camera, being sufficient to release the lower catch, after which the winding-up roller is turned by the handle D at the upper end of its shaft, so that the film exposed is wound up, while simultaneously the roll-holder is moved backward across the camera to its normal position at the left-hand corner of the same, the slide-frame being also moved simultaneously until it arrives at the right-hand end of the easing, whereupon its handle is folded over alongside of the same in the position shown in Fig. l. The same operation is repeated when the next exposure is to be made, the ground glass being used for focusing the film in the same manner as before for the focusing of the sensitized plate. The film exposures may be continued until the lm of the roll-holder is entirely transferred to the windingup roller, which can be readily ascertained by opening` the lid at the left-hand side of the easing or in any other suitable manner, as by a counter, as well known, for indieating the number of films exposed, said counter being operated by the reciprocating motion of the roll-holder.

My improved photographic camera is used as follows: lfVhen it is to be used as an ordinary camera, the ground glass C is moved forward by its crank-pin C3 until the proper focus is obtained. The ground glass is then moved backward again, the plate-holder inserted, and the picture taken by exposure in the usual manner. \Vl1en film-pictures are to be taken, the focusing is done on the ground glass C in the same manner, the ground glass returned into its normal position at the rear part of the camera, and the rollholder D moved transversely across the casing by the slide-frame G, so as to stretch the required length of film across the rear end of the bellows-shaped portion of the camera, after which the film is exposed in the usual manner. The roll-holder is then returned to its normal position by winding the exposed film on the winding-up roller D', all parts being then returned to their normal position. The locking of the roll-holder by its pawland-ratchet mechanism prevents the unwinding of the film during the return motion of the roll-holder. The camera can thus be used for ordinary pictures on sensitized glass plates in connection with the plate-holder or for making film-pictures, both being possible in one structure, by which the value of the camera is considerably increased.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a photographic camera, the combination, with the casing provided with a ground glass, of means for shifting the ground glass forward and backward in the camera, a rollholder arranged at one side of the camera, a Winding-up roller adjacent to the roll-holder at the same side of the camera, and means for moving the roll-holder across the camera to the opposite side of the same so as to unwind the required length of film, and hold it in position for exposure, substantially as set forth.

2. Inaphotographic camera, the combination, With the casing provided with a ground glass, of means for moving the ground glass into forward or backward position, a film-carrying roll-holder located at one side of the camera, a winding-up roller adjacent the rollholder, a guide-roller between said roll-holder and winding-up roller, means for moving the roll-holder across the casing to the opposite side thereof, and means for locking the rollholder in the second position so as to permit exposure of the film stretched across the casing, substantially as set forth.

3. In a photographic camera, the combina- IOO IIO

tion, With the casing, provided With a ground glass, of' means for shifting the ground glass forwardly or backwardly, a roll-holder at one side of the casing, means for locking the rol1- holder in its position, a slide-frame adapted to release the roll-holder and move it transversely across the casing, a Winding-up roller adjacent to the normal position of the rollholder, and a guide-ro11er between the rollholder and Winding-up roller, so that by the transverse motion of the roll-holder a film is stretched across the casing, substantially as set forth.

4. In a photographic camera, the combination, With the casing, of a film-carrying rollholder supported at one side of the same, a paWl-and-ratchet mechanism for locking t-he r0ll-holder, a guide-roller on the supportingframe of the roll-holder, a guide-roller in the casing, a Winding-up roller adjacent to the roll-holder and guide-roller, and means for moving the roll-holder across the casing, substantially as set forth.

5. In a photographic camera, the combination, With a casing provided With guideways, of a roll-holder supported at one corner of said casing, means for guiding said roll-holder in the guideways of the casing, a paWl-andratchet mechanism for locking the roll-holder, a guide-roller adjacent to the roll-holder, a second guide-roller in the casing, a Windingup roller adjacent to the normal position of the roll-holder, and a slide-frame guided in grooves of the casing and adapted to release the pawl from the ratchet mechanism so as to unlock the roll-holder, said slide-frame being provided with a handle at the outside of the casing, substantially as set forth.

6. In a photographic camera, the combination of the casing, a roll-holder carrying one end of a sensitized lm, means for moving the said roll-holder transversely of the camera, and aground-glass plate movable across the path of movement of the roll-holder, substantially as set forth.

In testimony that I claim the foregoing as my invention I have signed my name in presence of tWo subscribing Witnesses.

ADOLF OTTO GRAF.

Witnesses: PAUL GOEPEL, M. H. WURTZEL. 

